(1 of ) CONNER JAY/ PD

(2 of )Dave McCullick, vice president of Sonoma Patient Group, inspects various types of hash oil that have been formed into a type of wax and powder for convenience in Santa Rosa on Friday, Aug. 9, 2013. CONNER JAY/ PD

(3 of )Dave McCullick, vice president of Santa Rosa pot dispensary Sonoma Patient Group, inspects various types of hash oil that have been formed into a type of wax and powder for convenience in Santa Rosa on Friday, Aug. 9, 2013. CONNER JAY/ PD

(4 of )Inserts for a personal vaporizer or electronic cigarette containing hash oil are sold at the Sonoma Patient Group on Friday, Aug. 9, 2013. CONNER JAY/ PD

(5 of )Various types of hash oil that have been formed into a type of wax and powder for convenience are displayed at Sonoma Patient Group in Santa Rosa on Friday, August 9, 2013. The manufacturing of of this oil is a dangerous process to amateur hash makers causing home fires. (Conner Jay/The Press Democrat)